1 The average monthly Social Security benefit paid to retired workers in 2015 is $1,335.97, or $16,031.64 a year. 2  The average monthly Social Security benefit paid to widows & widowers is $1,282.25, or $15,387.00 per year.
Like all hadrons, neutrons are made of quarks. A neutron is made of two down quarks and one up quark. One up quark has a charge of +2/3, and the two down quarks each have a charge of -1/3. The fact that these charges cancel out is why neutrons have a neutral (0) charge. Quarks are held together by gluons.
Could there be anything smaller inside of an electron or inside of a neutron or a proton? What kinds of quarks are protons and neutrons made of? What was the old name for the Top and Bottom quark? What is the charge of an up quark and the charge of a down quark? How many quarks make up a proton and a neutron? Are quarks confineable for study?